I/O panel filtering for shielded room

We are looking into setting up a very basic shielded chamber inside a small room at my company to be able to perform some basic relative radiated EMC measurements.

We will buy a somewhat cheap spectrum analyzer together with a set of near field probes and a biconical antenna, and want to have a room where we can perform measurements with as little interference as possible.

So I’ve been looking into doing a very cheap DIY shielded chamber inside the room, by building a wooden frame and wrapping chicken wire around the frame with thick aluminum foil to seal all joints.

The only thing I still feel unsure about is how to do the filtering for the I/O panel. What we need to get into the chamber is the following signals:

• 230V/50 Hz power
• USB 2.0
• Ethernet
• Coax antenna connector for biconical antenna
• Two BNC connectors for DC power supply
• SMA connector for various RF stuff

So my question is how I would filter all of these signals in suitable ways? Our plan right now is to slap ferrites on all signals, but I don’t think that will accomplish very much. What would be a better way?

EDIT: For anyone looking for additional answers to this question, I asked Keith Armstrong over at emcstandards.co.uk and he very kindly made this blog post about my question: https://www.emcstandards.co.uk/constructing-io-panels-for-shielded-rooms